An inequality, in need of help.

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The discussion focuses on proving the inequality n(x-y)y^(n-1)y>0 and n>1, where n is a natural number. The user attempts to manipulate the expression n(x^n-y^n)/(x-y) but struggles to derive the desired result. The factorization xn - yn = (x - y)(xn-1 + xn-2y + ... + yn-1) is mentioned as a potential approach to simplify the problem.

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i need to prove that if x>y>0 and n>1 n natural then:
n(x-y)y^(n-1)<x^n-y^n<n(x-y)x^(n-1)

i tried almost everything from n(x^n-y^n)/x-y>(x^n-y^n)/x-y>1

but to get nothing, can someone help?
 
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You know, do you not, that xn- yn= (x- y)(xn-1+ xn-2y+ ...+ xyn-2+ yn-1)?
 
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well thanks.
 

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